<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div id="app">
    <input type="text" v-model="msg"/>
    {{msg}}
    <div v-once>
        {{msg}}
    </div>
    {{msg2}}
    <div v-html="msg2"/>

   <div v-text="msg"></div>
</div>

</body>
<script src="../node_modules/vue/dist/vue.js"></script>
<script>
   let vm =  new Vue({
        el: '#app',
            data:{
                msg:'xf test',
                msg2:'<h1>hello xf</h1>'
            }
    })


</script>
</html>